[mlmmj] README.exim4 broken, needs update

Ahoi,

> The mlmmj.org website hosts a tutorial for exim 4 setup at
> http://mlmmj.org/docs/readme-exim4/

thanks to Florian for the dsearch syntax

I added multi-domain handling and debug Output

  you still need uniq user_parts
    [email protected]
    [email protected]
  will not work


Git comment
  Date:   Fri Mar 6 09:40:23 2026 +0100

  Update exim4 configuration hints
    - add debug output to router and transport
    - lookup changes according
        exim4 >= 4.94 taind behaver
      (Errors like "Tainted filename for search")
    - add router condition for setups with more than one domain (you need uniq
      local_parts over all your lists, but we do not want to match the transport on
      [email protected])

  hint
    - VERP config is not changed/updated, may not work


changed exim4 Readme
  https://codeberg.org/mlmmj/mlmmj/src/commit/690feb17265dc589f9b5275834dd76e251b47625/README.exim4.md

pull-request
  https://codeberg.org/mlmmj/mlmmj/pulls/88


Thanks for mlmmj
Grenouille